Abstract: A method of treating aqueous, preferably concentrated, waste streams with a unique combination of steps in a way that is easily scalable and able to be used with batch or continuous flows. The method comprises at least the following steps: Adding at least one precipitating agent to the waste water to produce precipitated solids; and removing the precipitated solids from the waste water using a forward flushable membrane to remove the precipitate solids.

Abstract: The present invention is directed to clay composites comprising at least one polycation attached to the clay surface and at least one aldehyde degrading microorganism and uses thereof for removal of aldehyde from aldehyde containing environments.

Abstract: Described herein is a multilayer microporous film or membrane that may exhibit improved properties, including improved dielectric break down and strength, compared to prior monolayer or tri-layer microporous membranes of the same thickness. The preferred multilayer microporous membrane comprises microlayers and one or more lamination interfaces or barriers. Also disclosed is a battery separator or battery comprising one or more of the multilayer microporous films or membranes. The inventive battery and battery separator is preferably safer and more robust than batteries and battery separators using prior monolayer and tri-layer microporous membranes. Also, described herein is a method for making the multilayer microporous separators, membranes or films described herein.

Abstract: The disclosure discloses an irreversible covalent organic framework for efficient and selective gold recovery and a preparation method thereof, and belongs to the technical field of precious metal recovery from an aqueous solution. In the disclosure, metal trifluoromethanesulfonate is used as a catalyst, and a solvothermal method is used to prepare a mother covalent organic framework, and then the corresponding structural unit is used to perform an exchange reaction to prepare an irreversible amide-linked covalent organic framework material. The disclosure solves the problem of preparation of high-stability irreversible covalent organic framework, the introduced amide bond gives the covalent organic framework the ability to quickly and selectively recover precious metal gold from an aqueous solution, and the covalent organic framework can be used repeatedly.

Abstract: Embodiments of the invention concern a supercharger (1) for feeding honey and beeswax mixture into a honey and beeswax separation screw, which comprises at least a filter pipe (3), a pipe connection fitting (4), an inlet pipe (7) for honey and beeswax mixture and an inlet pipe connection (6) for the honey and beeswax mixture inlet pipe. In an embodied supercharger, the pipe connection fitting (4) is connected radially to the side of the filter pipe (3) and to the other end of the pipe connection fitting is connected the inlet pipe (7) for honey and beeswax mixture using the inlet pipe connection (6) for the honey and beeswax mixture inlet pipe.

Abstract: A filter device includes an inlet manifold, an outlet manifold and membrane filter units. Each membrane filter unit has an inlet opening for a fluid flow to be processed, a first outlet opening for a retentate portion of the fluid flow, and a second outlet opening for a remaining portion of the fluid flow. Each inlet opening is fluidly connected to the inlet manifold, and each first outlet opening is fluidly connected to the outlet manifold. The two membrane filter units are staggered and are not axially aligned with respect to each other. One of the membrane filter units is fluidly connected to the inlet manifold and to the outlet manifold via a first set of conduits, and the other membrane filter unit is fluidly connected to the inlet manifold and to the outlet manifold via a second set of conduits.

Abstract: The present invention relates to recovery of lithium from liquid resources to produce lithium solutions while limiting impurity precipitation in the lithium solutions.

Abstract: A method of water treatment includes providing water that includes at least one contaminant. An effective amount of at least one filter media is added to the to the water that includes at least one contaminant. The water and the at least one filter media are agitated to form a homogeneous mixture. A cationic biopolymer is added to the homogeneous mixture of water and the at least one filter media. The water is separated from the at least one contaminant and the at least one filter media.

Abstract: Processes are provided for the kinetically efficient reduction of selenate species to selenide species using chromous ions in acidic solution. This reduction may advantageously be carried out in the presence of sulphate species, with selective selenate reduction in preference to the reduction of sulfate. The reduced selenate may be removed from the chromous-treated solution, for example by precipitation of a copper-selenide solid. The chromic ions formed by reaction of chromous ions in the reduction of selenate may also be removed from solution, for example by addition of a base to form an insoluble chromic hydroxide solid. The chromic hydroxide may be recycled to regenerate chromous ions, for example by electrolysis. In this way, systems are provided for continuously removing dissolved selenium from wastewater streams.

Abstract: The present disclosure discloses recycling treatment equipment for recycling heavy metals from complexed heavy metal wastewater, and belongs to the technical field of wastewater treatment. The recycling treatment equipment includes a wastewater separation and concentration component, an oxidization and decomplexing component, an electrolytic recovery component, and an intelligent detection component. Wastewater containing complexed heavy metals is divided into fresh water and concentrated water by performing microfiltration, nanofiltration, and reverse osmosis purification pretreatment, and the fresh water is then recycled in a targeted manner, so that the equipment has energy conservation and discharge reduction effects, can decomplex and recycle heavy metals in the concentrated water, and also synchronously purifies the fresh water. The whole process has the advantages of simple operation, zero sludge, and low treatment cost, so that the equipment is suitable for being greatly promoted.

Abstract: The invention relates to the methods for sewage treatment contaminated by mechanical impurities, fats, proteins and other organic and inorganic compounds, and can be used for purification and water disinfection contaminated by heavy and radioactive metals, saturated or unsaturated fats, filtrate from landfills, meat processing plants, and/or oil and petroleum.

Abstract: A method for deodorizing sludge with a metal salt and a tannin extract together, deodorized sludge, and use thereof are provided. The present invention provides a sludge deodorization technology that has high treatment efficiency, environmental friendliness, and low investment costs, and satisfies harmless requirements of subsequent resource utilization such as incineration, pyrolysis, or carbonization. Characterized by containing abundant phenolic hydroxyl groups, the tannin extract is used as a multidentate ligand to undergo a complexation reaction with metal ions, which reduces bioavailability of proteins and other macromolecules, and effectively inhibits production of low-volatile sulfides, thereby significantly deodorizing the sludge during standing and combustion.

Abstract: A composition and process for reducing contaminants from water which includes use of a water-insoluble adsorbent having a surface area of at least about 10 m2/g, where the adsorbent is coated with a water-soluble metal salt.

Abstract: Plant (1) intended for the treatment of a fluid (15) by passage of an upflow (90) of said fluid (15) through a bed of adsorbent media particles (13). The plant (1) comprises a reactor (2) intended to contain the bed of adsorbent media particles (13), comprising: a means for injecting and distributing fluid to be treated, disposed at the bottom part, for forming the upflow (90) of fluid (15) within the reactor (2) and enabling the fluidization and expansion of said bed of adsorbent media particles (13); a means for recovering treated fluid; a means for deflecting fluid (20) disposed at the top part, intended for reducing the speed of the upflow (90) of fluid (15) and enabling the formation of a tranquil zone (27), said means for recovering treated fluid being disposed downstream from said tranquil zone (27).

Abstract: Nanofiber filter media ribbons are flexible elongate strips of polymeric material having a surface on which is formed an array of nanofibers. Ribbons are formable into woven or non-woven mats. The array of nanofibers can be configured to filter a predetermined contaminant from a fluid stream passing through the mats. Filter ribbons are formable by applying a moldable polymer to a first angular location of a rotating cylindrical roll having an array of nanoholes formed in a circumferential surface thereof so that the polymer covers the surface of the roll and infiltrates the nanoholes; cooling the polymer while rotating the polymer-covered roll to a second angular position; and removing the cooled polymer from the roll as an elongate film having an array of nanofibers formed on a surface thereof by the polymer that infiltrated the nanoholes.

Abstract: A novel Salt Repellent Technique is presented to remove all inorganic salts from seawater to get potable water. The repellent additives recommended throws out all salts of sodium, magnesium, calcium, potassium and the like ions from seawater and paves way to get salt free potable water. The conventional washing of ice crystals is completely avoided due to the presence of additives. This technique helps to remove last traces of salts from seawater and analogous waters, without undertaking the conventional washing process. The new salt repellent process assures of high water recovery, ease of operation, lesser pollution, smaller plants, simpler machinery and technology, lower energy cost, nil or lesser pre-treatment and recovery of valuable by-products. To reduce the TDS still lower, it is recommended to have a simplified reverse osmosis unit in addition, as a post-operative arrangement.

Abstract: An article Including a support matrix including a plurality of pores, a metal oxide and a clay, wherein the metal oxide and the clay are disposed on the support matrix or within the plurality of pores of the support matrix, and a method of removing a hydrocarbon fluid and microplastics from an aqueous fluid by immersing the article into the aqueous fluid.

Abstract: Provided are catalytic assemblies which include a hollow fiber membrane permeable to a gas; a reactive coating permeable to the gas and a contaminant; and a plurality of catalytic nanoparticles embedded in the reactive coating adapted to catalyze a reaction between the gas and the contaminant. Also provided are preparation methods for the catalytic assemblies, and use thereof for treating contaminated water.

Abstract: An apparatus and method for decontamination of effluent, includes connecting a first ejector to source of a first motive fluid, directing from the first ejector first motive fluid into piping connected to a source of effluent thus causing the effluent to stream in the piping and simultaneously causing the effluent to be heated, and controlling the directing of the first motive fluid in such a way that a predetermined thermal effect is achieved.

Abstract: A method of treating a metal carbonate salt includes hydrolyzing a metal halide salt to form a hydrohalic acid and a hydroxide salt of the metal in the metal halide salt. The metal includes an alkaline earth metal or an alkali metal. The method includes reacting the hydrohalic acid with the metal carbonate salt, wherein the metal carbonate salt is a carbonate salt of the alkaline earth metal or alkali metal, to form CO2 and the metal halide salt. At least some of the metal halide salt formed from the reacting of the hydrohalic acid with the metal carbonate salt is recycled as at least some of the metal halide salt in the hydrolyzing of the metal halide salt to form the hydrohalic acid and the hydroxide salt.